Thanks for that, i rang three and they actually gave me the wrong settings! i think that when they hear that your phone is an unlocked one rather than a three one they do it on purpose to try and get you to buy a new phone. grr.

None of the settings seen here or on other threads worked for me. I contacted 3 who haven’t a clue. Sent me the wrong setting completely & then told me as it wasn’t a 3 handset that it may not work anyways. Retarded!
What did work for me is as below (Phone: HTC One X)

Have tried all the above settings, none of which have worked, have also tried tweaker, I can sent MMS but cant receive them, however strangly enough I got my work colleague to sent me a MMS from his Galaxy S3 which I got, yet I stll can receive when sent from my girlfriends iphone 4s. Is there any other setting I can try. Phone has been reset, apn’s changed and rebooted. I am all out of ideas and cant find anything anywhere online about this.
Any help would be greatly appreciated
Thanks

I have a Samsung Exhibit 2 4G (US Tmobile, unlocked and rooted)which is also 3G compatible and have used Tweaker and manually set the APN settings without any luck. I have also manually gone into the menu and changed the frequency to 2100mhz without success. nybody have any ideas

Ah ha! You geniuses. The second one worked for me. Thanks so much. I spent 50 minutes on hold to 3 to ask them to send me settings. Eventually gave up because they never answered. Ridiiculous customer service. Was hard enough to find the settings. Didn’t realise it was standard settings for all Android phones rather than varying for models and brands. (Note: you have to turn off Wifi in order to check that it has worked if using Wifi at the time).

I have a Samusung galaxy S2, having zero luck with any of these codes, same story as above, rang three ‘service not guaranteed’ etc.
I really have tried all of these, I’m so stuck please help.
have no MMS protocol option if that’s relevant?